Controlling mechanism



' Fig.1.

Nov. 3, 1931. E. A. HOLMGREN 1,330,605

CONTROLLING MECHANISM Original Filed April 13, 1925 5 Sheets-Sheet 1 /N VENTUR.

Nov. 3, 1931. E. A. HOLMGREN 1,830,605

CONTROLLING MECHANISM Original Filed April 1:5, 1925 s Sheets-Sheef 2 Fig. 2.

Nov. 3, 1931. E. A. HOLMGREN 1,830,605

CONTROLLING MEQHANISM Original Filed April 13, 1925 5 Sheets-Sheet 3 VENTUR- Patented Nov. 3, I931 met ERIC A. HOLMGREN, OF LYNN, MASSACHUSETTS, AssIGnoa T0 UNITED" SHOE MA- CHINERY CORPORATION, OF PATERSON,

JERSEY N'EVJ JERSEY, A CORPORATION OF NEW CONTROLLING MECHANISIVL Original application filed April 13; 1925, Serial No.- 22524. Divided. and this application filedaMay1 3;

1930. Serial This invention concerns mechanisms for controlling the operation of machines and, the length of time during which such operation continues. It is herein disclosedin connection with an apparatus for manufacturingcomposite insoles for shoes, which apparatus is made the SlllJjGCtof an apphcation forLetters Patent filed. 1n my name in the .United States Patent Oiilce onApril 18, 1925,

' operating means in action for a definite time,

for the purpose, for example, of applying to layers of insole-material with an interposed adhesive a proper assembling pressure- I achieve this object by the employment of rotatable connecting mechanism, as aclutch, with a disconnecting member actingthereon, together with means arranged'to free the connecting mechanism from the disconnecting-member after a predetermined interval. By the successive disconnection and connection of the clutch, the pressure operation is respectively initiated and terminated. The freeing of the connecting mechanism may be accomplished by ratchetmechanism. Preferably, I provide means for varying the time of action of the controlling mechanism, the means herein shown being adapted to change the relation of an element. of the ratchet mechanism. i

In the accompanying'drawings illustrating a particular employment of the invention,

Fig. 1 shows in front elevation a machine including my improved controlling. mechanism;

Fig. 2 is a horizontal section on the line II-II of Fig. 1;

Fig. 3 is a vertical sectional detail on the line TIT-III of Fig. 2;

Fig. 4 shows the time-controlling nism in side elevation;

Fig. 5 is a topplan view of said mechanismya'n'd.

Fig. 6, a horizontal sectional detail on-the line VIVI of Fig. 4.

A turret 25, rotatable about a vertical axis mechaformed elements and leather portions to gether to complete the soles. But one ofeach.

ofthe pairs 27', 28 and 27, 29'appearsinFig 1' of the drawings. The dies 28, 28am of. suchicontour as to operate, respectively, upon.

right and left soles. The dies 29, 29 aresimilarly arranged for the formation of the. respective soles of'a pair. The correspond ing dies, that is, the rights and. lefts of the 1 two pairs, are separated from eachoth-er. by 180 degrees, those of ea chpair, being, 9.0 de

grees apart. The cooperating dies 27 arein,

alike manner arranged in pairs of rights. and lefts. Carried at the loweraportion of thei frame is a motor 30, shown in the presentinst'an'cefias electric, which suppliespower through clutch mechanism 32 controlled by cam mechanism 34to alternatelyrotate the turret through 180, degrees, sothat the pairs. 1 1

of dies 27, consisting of a right and. a left, are successively presented for cooperationwith the dies 28 and 29,. and to reciprocate these last-mentioned: dies to; produce their forming and assemblin'g effects. When the turret is in motion, theupper dies are at rest, and when thetravel of the turret ceases, the reciprocation of the upper dies takes place. The upper section of the clutch mechanism is geared to the turret at36' toproduce; its in.- termittent rotation, while the lower'clutchsection operates, through gearing 37 and a: central shaft 38, .crank mechanisms im-which intermittently reciprocatetogcther the dies. 28 and 29. The last-mentioned: connections are through a mechanism X, serving torcontrol the time during which the dies 28'and 29 are forced against the work upon the dies27. The feeding mechanisms for: supplying the blanks to be operated onto the dies form no part ofthe present invention and need not be described.

The motor 30 is shown as belted to a counter-shaft 430 (Fig. 2) journaled at thebottom of theframe and having fixed to it a fly-wheel 432. Current is delivered to the motor through a switch enclosed in a casing 484 (Fig. 1), and opened or closed by connections; at 436 to a hand-lever 488 pivoted when the lever 438 is raised to close the switch,

the brake-band is simultaneously released to free the fly-wheel, and when said lever is lowered. the brake is applied to the fly-wheel. A treadle 450 may be included in the leversystem, connecting through the toggle 448 with the band 442, so that the rake may be applied independently of the movement, of

the hand-lever. Worm reducing gearing 452 transmits power from the counter-shaft to a shaft 454 rotatable about avertical axis in the frame, and to which'is secured the driving member of the clutch mechanism 32. The lower drivensection of the clutch is connected by spiral gearing 458 to a sleeve 460 of the time-controlling mechanism X this sleeve being rotatable about'a shaft 122 journaled parallel to the shaft 430. The purpose of this mechanism is to vary the duration of the operation of the dies upon the work. As is best shown in Figs. 4 and 5, the sleeve 460 has clamped upon it an internally toothed disk 462 of a clutch of the Bliss type, the other disk 464 of which is fast upon the shaft 122 and carries a rotatable key 466 for engagement with the teeth. A spring 468, extending from an inner arm of the key to the outer face of the disk 464, exerts a force tending to so rotate the key that it will come into the path of the teeth to connect the driving member 462 with the driven member 464. The key is normally held disengaged from the disk 462, so thatthe disk 464 and shaft 122 are at rest, by a stop-bar 469 arranged to move into the path along which travels a tail 471 of the key. The stop-bar projects from one end of a shaft 470 rotatable within a sleeve 472 (Fig. 6) journaled in a bracket 474 mounted upon the frame. .At the opposite extremity of the shaft-470 from the arm is a head 476 having a peripheral projection 478 (Fig. A spring 480, joining the stop-bar 469 to the bracket, draws a projection 482 upon the stop-bar into engagement with the bracket to determine the position of the end of the bar in the path of the key-portion 471. EX-- to move the pawl 512 into enga tending radially from a sleeve 484 turning upon the sleeve 472 is an arm 486 having a screw or other projection 488, which may be inserted in any one of a series of openings 490 formed in a plate 492 rising from the bracket parallel to the arm. Engagement of the projection with one or another of the openings alters the angular relation of a stop projection 494lying at the inner side of the arm 486 and serving to variably determine the normal position of a timing disk 496 fixed to the outer extremity of the sleeve 472. A helicalspring 498 surrounding the sleeve 484 is secured at 500 and 502 to the arm 486 and the disk 496, respectively, and acts to draw a projection 504 at the inner side of the disk toward the stop-projection 494.

Upon the outer face of the disk 496 is an actuating projection 506, which, when said disk is turned inan anti-clockwise direction. as viewed in Fig. 4 of the drawings, will strike the projection 478 upon thehead 476, turning the shaft 470 to raise the stop-bar 469. This releases the key 466, allowing it to turn into engagement with the traveling teeth of the disk 462 to drive the shaft 122. Upon the periphery of the disk 496 are two sets of ratchet-teeth 508 and 510. With the first of these co-operates a pawl 512 yieldable upon the generally vertical arm of a bell-crank-lever 514-fixed to a shaft 516 rotatable in the bracket adjacent to the shaft 470. A horizontal arm of the lever 514 has a'projection 518 operating in a cam-groove in theouter face of the disk'462. This groove is so formed that, in the continuous rotation of the disk,the lever is constantly oscillated, gement with the teeth 508. A retaining detent 520 for engagement with the set of ratchet-teeth 510 terminates one arm of a bell-crank-lever 522' mounted to turn about the shaft 516, the other arm of which lever carries a roll 524 for contact with the periphery of the clutchdisk 464. A spring 526 acts to simultaneously draw the detent against the ratchetteeth and the roll into contact with the disk. For the-greater portion of the are of contact between the roll and disk, the circular contour of the latter is unbroken. This so positions the lever 522 that the detent 520 is out of co-operation with the ratchet-teeth 510. Durin this'period', the pawl 512, in its oscillation, imparts a corresponding idle oscillation to thedisk 496. A relatively small peripheral portion of the disk 464 is depressed. as appears at 528 in Fig.4. WVhen the roll 524 a-rrivesat this depression, the spring 526 draws the detent into engagement with the ratchet-teeth. Now when the pawl 512 acts upon the disk, each oscillation causes said disk to advance a step, this being held by the detent. The moiement continues until the disk-projection 506 strikes the head-projection 478 lifting the stop-bar 469 to release the clutch-key and produce rotation of the shaft 122, as previously described. The roll 524 then rides out of the depression, releasing the disk 496 from the detent, and permitting the spring 498 to act to return the projection 504 to its position against the projection 494 upon the adjusting arm. Since, however, the portion 471 of the key has left the stop-bar, rotation of the disk 464 and the driven shaft continues, during this interval the pawl producing its idle oscillating movement of the timing disk. After the driving disk 462 has made one turn, the key arrives at the stop-bar 469 to release the disk 464 and stop the shaft 122, while the depression 528 also reaches the roll 524 to initiate another timing action of the mechanism. It will be seen that the length of the interval during which the clutch-elements are disconnected and the shaft 122 is at rest, depends upon the position of the arm 486, since this determines the initial position of the projection 504 and the are through which the projection 506 must move to release the clutch-key from the stop-bar.

Considering the operation of the pressure means, the clutch mechanism 32'having been shifted by the cam mechanism 34, the upper section of the former is disengaged and the lower section engaged; This stops the travel of the turret and the feed of the blanks occurs.

, Then the ribbed dies 28 act to mold the canvas blanks to produce their sewing ribs, while the dies 29 press cemented leather blanks upon the already formed canvas blanks. At this time the disks 462 and 464 are clutched together by the key 466, and the shaft 122 is in rotation. As the end of the action of the dies under the control of the cam mechanism 34 approaches, the clutch-disk 464, in its rotation, brings the key 466 to a point at which it is disengaged from the disk 462 by contact with the bar 469, while the roll 524 enters the depression 528 in the disk 464. This stops the shaft 122 and starts the action of the time-controlling mechanism X, which determines the interval of rest of said shaft, and therefore of the cam mechanism 34 and the crank mechanisms 40 governed thereby. In this manner, the interval of pressure applied by the dies 28 and 29 to the work may be prolonged to an amount varying from a minimum, when the arm 486 is at its extreme position to the left, as seen in Fig. 4 of the drawings, to the maximum, when it is at the opposite end of the series of openings 490. In the'first instance, it takes but few oscillations of the pawl 512 to bring the acratchet-teeth 508, and the time of rest of the shaft 122 and the prolongation of pressure is at a maximum. 'Between the two limits,

which cause the work-feeding and turret rotation, remain unchanged, so that no ineffective delay is introduced into the cycle. When the shaft 122' and cam mechanism again start in rotation, the latter operates to disengage the lower section of the clutch mechanism 82, terminating the cycle.

Having described my invention, what I claim asnew'and desire to secure by Letters Patent of the United States is:

1. The combination with rotatable connectingmechanism, of a disconnecting member arranged to act upon the connecting mechanism, and means arranged to free the con necting mechanism fromthe disconnecting.

member after a predetermined interval.

2. The combination with rotatable connecting mechanism, of a disconne'ctingmember arrangedto act upon the connecting mechanism,"means arranged to free the connecting mechanism from the disconnecting member after a predetermined interval, and means arranged to vary such interval.

3. The combination with mechanism, of a disconnecting member arranged to act upon the connecting mechanism, and means carried by the connecting mechanism to free said mechanism from the" disconnecting member.

4. The combination with rotatable clutch mechanism,,o,f a disconnectmg member ar ranged to act periodically upon the clutch .mechanism, .and means arranged to free the tion of the clutch mechanism to free said mechanism from the disconnecting member. 7. The combinatlon with rotatable clutch connecting members, of a disconnecting member co-oper- .ating. therewith, and'ratchet mechanism arranged to freethe clutch mechanism from the disconnecting member at predetermined times.

8. The combination with rotatable clutch members, of a disconnecting member co-opcrating therewith, ratchet mechanism ariati an ed: o f e he clutch mecha sm f -Qm.

he di c nne t ng member t. p edetermined.

imes, and m ans errang d evary the. fela:

oll otan e ement fi h ra het m han m to. cha ge h t m Qt i c nne on- 9... A ombi a n, with otatable lutch members, of a, connecting member therefor, amovable d sconnectlng member =w1th whlch.

the I connecting member-may contact, ,and ac-. tuatmg, means for moving the d sconnect ng member intothepath of the connecting meinber after a predeterminedtime.

A combination with rotatable clutch members, of a connectmg member therefor, a movable disconnecting member wlth wh ch.

the connecting member may contact, and an c uati g m an for h s o ing m mbermovable through dlfierent ClIStaILCQS tO affect such actuation 11. A combination with; rotatableclutch members, of a connecting. member therefor,

a movable disconnecting member with which,

the. connecting member may contact, and actuating meansforl moving the disconnecting member. into the .path of the connecting member after a predetermined time, f:

12. The combination withrotatableclutch members, of akeyv for connecting the meme bers,a disconnecting member actingupon the keyin the movementot' the clutchfmembers, a ratchet-wheel carrying meansQto separate the disconnectingv member from the key, a

pawl. co-operating withsl he ratchet-Wheel,

means for constantly oscillating the pawl, and means for periodically rendering the pawletl'ective to rotate the ratchet-wheel,

13. The combination with rotatable clutch members, of azkey for connectingthe members, a disconnecting member acting .upon the keyin the. movement of the clutch members,

a ratchet-wheel carrying means to separate the disconnecting member from the key, a pawl co-operating with the ratchet-wheel,

means. for constantly oscillating the pawl,

means for periodically rendering the-pawl effective to rotate the ratchet-wheel, and. means, for fixing the separatingmeans. of

the ratchet-Wheel in dilferent' angular posi tions. 7 14. Thecombination with rotatable clutch members, of a. disconnecting member co-operating therewith, ratchet mechanism moy able to free the clutch mechanisnifrom the disconnecting member and including a re taining detent, and meansarranged to render the detent and therefore the ratchet mechanism effective periodically.

In testimony whereof I have signed my name to thisspecificationi 7 ERIC AQHOLMGBEN- 

